MDD090A-N-020-N2L-130PB2
MDD Synchronous Motors
The MDD090A-N-020-N2L-130PB2 is a servo motor produced by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Designed to pair with digital drive controllers, the unit converts commanded current into rotary motion for positioning or velocity control in automated machinery. Its electromechanical layout fills the need for compact, feedback-controlled motion sources commonly found on packaging lines, material-transfer stations, and light machining centers.
At standstill the motor delivers a continuous torque of 3.7 Nm, providing sufficient holding force for moderate static loads. When commanded up to its nominal mechanical speed of 2000 min⁻¹, it maintains stable operation without exceeding thermal limits. For emergency or powered-off restraint, an integrated blocking brake supplies 11.0 Nm of retentive torque. Position and velocity data are returned through digital servo feedback, enabling closed-loop regulation by the drive. A centering diameter of 130 mm aligns the stator housing precisely against mounting surfaces, simplifying concentric installation. These electrical and mechanical points establish a power-to-size ratio suited to indexing conveyors, small gantries, and auxiliary axes that do not demand high inertia loads.
The mechanical envelope follows the 090 frame code, and the rotor length matches the series’ short “A” format, so the weight and inertia remain low for rapid acceleration. Electrical and feedback conductors exit on the Side B face through a single keyed connector, allowing quick cable changes in confined panels. Dynamic balance is rated Standard to reduce vibration across the speed range, and the cast housing is also classified Standard for general industrial environments. A shaft seal protects the bearing set from coolant or dust ingress, and the ground output shaft uses a keyway to transmit torque to pulleys or couplings. Because the brake supply and encoder lines share the plug, cabinet wiring is simplified, and on-site replacement times are shortened during scheduled service.
Technical Specifications
Balancing
Standard
Centering Diameter
130 mm
Connection Direction
Side B
Connection Type
Connector
Continuous Torque at Standstill
3.7 Nm
Holding Brake
With blocking brake
Holding Brake Torque
11.0 Nm
Housing
Standard
Motor Feedback
Digital servo feedback (DSF)
Motor Length Code
A
Motor Size
090
Nominal Speed
2000 min⁻¹
Product Type
Motor for digital drive controllers
Shaft End
Standard (without side B shaft end)
Shaft Seal
With shaft seal
Shaft Type
keyway
Frequently Asked Questions
What advantage does digital servo feedback offer versus a resolver in startup and service?
DSF stores motor-specific parameters and supports variants with integrated multiturn absolute encoders, cutting homing time. It also standardizes connectors/handling across the MDD line for faster swap-outs.
How should I evaluate the holding brake for a vertical axis?
Size brake torque to exceed reflected load (mass, gearing/lead, friction), and note the MDD brake is a holding not service brake. If used dynamically it wears quickly (≈20,000 revs against a closed brake); use the drive for decel and the brake for securing at rest.
Can I extend the power-cable run, and what are typical limits?
Using standard Indramat power cables with DDC drives, published guidance allows runs up to ~75 m; longer runs can impact EMC and voltage drop. Verify your controller manual and apply proper shielding/filters.
Does DSF allow homing-free operation out of the box?
Plain DSF may still require homing, but DSF with an integrated multiturn absolute encoder provides absolute position retention. Check the exact code suffix to confirm encoder type.
Where are 090-frame MDD motors typically deployed in B2B settings?
They’re common on packaging, printing, pick-and-place, and auxiliary axes needing fast positioning with moderate torque. Integrators choose them for standardized feedback/connector options and wide controller compatibility.
Common Misspellings
MDD-090A-N-020-N2L-130PB2
MDD090A N 020 N2L 130PB2
MDD090A-N-020-N2L-130-PB2
MDD090AN020N2L130PB2
MDD90A-N-020-N2L-130PB2
MDDO90A-N-020-N2L-130PB2
MDDO9OA-N-O2O-N2L-13OPB2
Internal Product Review
Bosch Rexroth Indramat manufactures the MDD090A-N-020-N2L-130PB2 that is a synchronous servo motor used for digital drive controllers. It delivers 3.7 Nm continuous torque at standstill with an 11.0 Nm holding (blocking) brake, includes digital servo feedback (DSF), a 130 mm centering diameter, keyway shaft with seal, and standard length A housing. Its housing is standard-duty, well sealed and consistent with other MDD series motors, built for rugged industrial environments and compatible with standard mounting and protection provisions.
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